A person measured a line as 5.05 cm instead of its true length of 5.00 cm. What is the percentage error? MCQ with Answer and Explanation

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A person measured a line as 5.05 cm instead of its true length of 5.00 cm. What is the percentage error?

A. 1.5%

B. 1%

C. 0.5%

D. 2%

Answer: Option B

Solution (By JKSSB Mock Tests)

Error = 5.05 - 5.00 = 0.05. % Error = (0.05 / 5.00) * 100 = 1%.

This question belongs to: Maths Percentage

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Production increased from 6000 to 7200. Percentage increase:

A. 22%

B. 18%

C. 20%

D. 15%

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Correct Answer: Option C

Explanation:
(1200/6000)×100 = 20%.

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Question #2

Wage decreased 20% then increased 20%. Loss %:

A. 0%

B. 5%

C. 2%

D. 4%

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Correct Answer: Option D

Explanation:
0.8×1.2 = 0.96, loss 4%.

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Question #3

72% passed an exam. Failures = 560. Total examinees:

A. 2200

B. 1800

C. 2000

D. 2500

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Correct Answer: Option C

Explanation:
28% = 560, total = 560/0.28 = 2000.

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